Apparatus for turning irregular forms



Feb. 24. 1925.

J. MELLING APPARATUS FOR TURNING IRREGULAR FORMS Filed Dec. 6, 1920 4 Sheets$heet 1 INVENTOR. (jo s-52w WELL/Mg,

ATTORNEY.

Feb. 24. 1925.

1,527,208 .1. MELLING APPARATUS FOR TURNING IRREGULAR FORMS Fild Dec 6, 1920 4 Sheets-Sheet 2 INVENTOR. JOSEPH WELL/N9.

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Feb. 24, 1925.

.J. MELLING APPARATUS FOR TURNING IRREGULAR FORMS 4 Sheets-Sheet 5 Filed Dec 6, 1920 I N VEN TOR. 55p Wu A q B Y WM MA TTORNEY.

Feb. 24. 1925. 1,527,208

J. MELLI N G APPARATUS FOR TURNING IRREGULAR FORMS Filed Dec. 6, 1920 4 Sheets-Sheet 4 IN V EN TOR.

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A TTORNEY.

Patented Feb. 24, 1925.

ITE sra'ras JOSEPH MELLING, OF JACKSON, MICHIGAN.

APPARATUS FOR TURNING IRREGULAR FORMS.

Application filed December 6, 1920.

To all whom it may concern:

Be it known that I, Josurrr MELLING, a citizen of the United States, residing at Jackson, county of Jackson, State of Michigan, have invented a certain new and use ful Improvement in Apparatus for Turning Irregular Forms, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in theart to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this. specification.

' My invention relates to apparatus for turning irregular forms and a special object of my improvements is to provide'an improved apparatus for turning the'cams on the valve-actuating shaft of an internal combustion engine.

In the accompanying drawings:

Figure 1 is a side elevation of an apparatus embodying my invention.

Fig. 2 is a plan of the same partly broken away.

Fig. 3 is a front elevation looking from the left of Fig. 1, parts being broken away as indicated by the broken line IIIIII Fig. 1 to show the internal construction.

Fig. 4 is a section in the plane indicated by the line IV-IV, Fig. 3.

a is the bed or frame of the apparatus. Rising from the upper portion of the frame a are guide plates 5 and a standard 0. There are a number of pairs of parallel guide plates 79 as indicated distinctly in Figs. 2 and 3.

Between each pair of guide plates 5 is a reciprocating carrier d. 0Z is a spring one end of which engages against the upper end of the standard a and the. other end against a carrier cl. (5 is a hanger integral with and extending downward from the carrier d. e is a friction wheel bearing in the lower end of the hanger d 1' is a tool holder pivoted at j upon a carrier a? and extending in front of said carrier. 7' is a similar tool holder pivoted at j to the carrier (5 and similarly extending in front of said carrier. 7' j are the tools held in the holders j and j. j is a connecting rod pivoted at y" to the upper tool holder j and at j to the lower tool holder j. q is a friction wheel on the lower end of the connecting rod j.

39 indicates a carriage adapted to reciprocats transversely of the base or frame a,

Serial No. 428,567.

into which it is dovetailed for that purpose, infront of the carriers (Z. 32 is a screwthreaded rod leading screw that may be turned by a handle 79* to move the carriage p in its ways. 4" and r indicate lathe heads, or work holders, adapted to support the. work in position to be operated upon by the tools s and s indicate cam shafts secured respectively in the holders or supports 7"- and 1- The shafts s and s are shaped to have cams '8 cut and formed thereon by the operation of the apparatus. The tools 3' are held and adjusted by the apparatus to shape the cams to their proper form.

f is a cam adapted to act upon the friction wheel a, in conjunction with the spring (F, to reciprocate the carrier (Z. 9 is a gear wheel on the same shaft as the cam f. h. is a gear wheel upon the power-receiving shaft 7?, its teeth engaging the teeth of the gear wheel 9. i is a cam of approximately the shape indicated, its active surface engaging the friction wheel 9 at the lower end of the connecting rod j.

0 is a gear wheel adapted to rotate the shaft 8. its teeth engaging the teeth of the gear wheel 71. nis a gear wheel adapted to rotate the shaft 8 m is an intermediate wheel engaging the. teeth of both the wheels 70 and n.

The operation of the above described device is as follows:

Power is aplied to rotate the shaft 7L by means of a belt and pulley or otherwise. The motion of the shaft k is conveyed to the cam f and the shafts s and 8 through the gearing above described. The cam f now acts in conjunction with the spring (Z to reciprocate the carrier (Z. The cam 71 acts in conjunction with the spring 9' to reciprocate the connecting rod i and thereby to oscillate the tool holders and about their bearings 7' and j In this way the motions imparted by the cams f and z to the tools 7' 7' always holds said tools in the proper cutting position and cause them to properly and accurately shape the cams upon the cam shafts.

I havev shown the tool holders and apparatus for working upon two shafts s and s at the same time; of course only one might be operated upon.

I have also shown a plurality of carriers 03 with their appurtenants for cutting a plurality of cams upon the same shaft.

The above construction brings the cam 2 close to the tool so that there is substantially no lost motion between the tool and the cam. The force exerted upon the tool is mostly conveyed to the cam without being transmitted to the cam d or parts secured thereon.

The two tool holders, one arranged above the other, are directly connected so that they move in unison and the connections are strong and rigid so that the positions of the tools are certain under all working conditions.

The cam z is of a simple form involving no sharp changes of direction, or great rate of acceleration of the actuated parts.

Claims:

1. In an apparatus of the kind described, a carrier adapted to be reciprocated, a pair of tool holders supported by said carrier, said holders having a freedom of motion independent of that of the carrier, means connecting said tool holders to constrain the relative movements of the same, a rotary work holder disposed within operable relationship of each tool holder.

2. In an apparatus of the kind described, a carrier adapted to be reciprocated, a pair of tool holders supported by said carrier having an oscillating motion independent of that of the carrier and at an angle to the motion of the carrier and a connecting rod pivoted to each tool holder to impart oscillating movement thereto, and a work holder disposed within operable relationship of said tool holders.

3. In an apparatus of the kind described, a carrier adapted to be reciprocated, a plurality of tool holders pivoted to said carrier,

a connecting rod pivoted to each of said tool holders, a cam to reciprocate the car rier, a cam to reciprocate the connecting rod to oscillate the tool holders about their pivots in a direction at an angle to the movement of the carrier, and a work holder disposed within proximity of each tool holder to support a piece of work within operable relationship thereof.

t. In apparatus of the character described, a spring-constrained carrier, a cam to cooperate with the spring to reciprocate the carrier, a plurality of tool holders pivotally supported by the carrier for oscillating movement angularly the movement of the carrier, cam-controlled means to simultane ously oscillate said tool holders, a rotatable work support for each tool holder disposed to support a piece of work within operable relationship thereof.

5. In apparatus of the character described, a movable carrier constrained in a given direction by a spring, a cam to actuate said carrier against the resistance of the spring to cause in co-operation with the spring reciprocation of the carrier, a plurality of tool holders pivotally supported by the carrier, a cam-controlled member to simultaneously oscillate said tool holders angularly the direction of travel of the carrier, a work holder for each tool holder disposed to sup port a piece of work within operable relationship thereof.

In testimony whereof, I sign this specification,

JOSEPH MELLING, 

